kingsland



J.'K|NGSLAND,-Jr., & N. WHITE."

Paper Drier.

No, 9,186. Patented Aug. 10, 1852.

SE8 FATE PIC.

J. KINGSLAND, JR., OF SAUGERTIES, AND N. WHITE, OF NET/V YORK, N. Y.

MODE OF DRYING SIZED PAPER.

Specification of Letters Patent No. 9,186, dated August 10, 1852.

To all whom it may concern:

Be it known that we, JOSEPH KINGSLAND, Jr., of Saugerties, in the county of Ulster, and NORMAN WHITE, of the city and county of New York, both in the State of New York, have invented certain new and useful Improvements in Machinery for Drying Paper After it is Sized; and we do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawing, making a part thereof, and which represents a perspective of the entire machine.

To enable others skilled in the art to make and use our invention, we will proceed to describe the same with reference to the drawing and point out in what particular it differs from anything before known or used for a similar purpose.

In paper drying machines heretofore in use, the paper has been made to pass through tight tubes, through which a blast of heated air is driven. By this method the vapor driven off from the sheet of paper, runs with the sheet to the end of the tube, where it escapes, thus causing the sheet to pass through air charged with humid vapor. In others, the sheet is made to pass over a series of rollers in a chamber into which heated air is forced. In this case the air that passes between the folds of the paper, is retained, it having no free circulation, and consequently fails, without great loss of time to accomplish the object. And in all the machines used for this purpose no gradation of the volume of heated air could be advantageously used or applied. By our arrangement, both sides of the sheet are continually subjected to the blast of air, which is gradually augmented both in volume and in heat, and the vapor driven off, escapes into the open air, without being permit-ted to be checked by or come in contact with the sheet, by which means we effectually accomplish the drying with great economy of time and machinery, and at the same time give the size time to set, without endangering the quality of the paper.

The nature of our invention therefore consists in passing the sized paper to be dried over and between a series of oblong trunks or cylinders, placed one above the other, which have their surface or surfaces perforatedwith small holes, through which a current of graduated heated air, forced by means of a blower, fan or other device, along the said trunks, may escape and come in contact with both sides of the continuous sheet or sheets, as the paper coming from the sizing vat, passes over rollers or other devices arranged for that purpose bet-ween the trunkssaid series of trunks and the paper between them being exposed to the open air, so that the vapor driven from the sheet at any and all points may be free to escape immediately, and not run with the sheet or sheets, to be again absorbed by them.

In a room of suitable size and construction, we arrange a trunk or hollow cylinder T, of wood or metal, which for ordinary purposes may he, say, fifty feet in length of rectangular form, and about one foot in depth this is placed at a convenient height above the floor, and the upper surface s, of the trunk is perforated with small holes, at proper distances for the escape of the heated air in sufiicient volume, and should be tight at the sides, ends, and bottom. Above the trunk T,parallel therewith, and at about ten inches from it, We place another trunk T, made in the same manner, and perforated like the first one both on the upper and under sides. In like manner we place two or more, other trunks, T, T, as may be found necessary above and parallel to the preceding, and at the same distance from it, and from each other, constructed in all respects like the former. The series of trunks may be continued or increased, but four will generally be found sufficient. These trunks are all closed at the ends, and are connected by, and supplied with heated air, through a flue or chamber F, leading from one to the other, or from the bottom to the top trunk, and which flue F, is provided with valves at its connection with each trunk to regulate and control the current of air, it being desirable to so regulate the volume of air, as that the sheet immediately after leaving the sizing tub or vat, shall be exposed to very little, if any blast, until the size has fairly incorporated itself with the paper, and is set, and then gradually increasing the blast until the paper is thoroughly dried.

The air may be supplied to the trunks, by the fan blower B, or in any other convenient or well known manner, heated either in a chamber without, or by steam pipes passing through and inclosed within one or more of the trunks. The air to be used may be heated up to about 80, and under any circumstances it may not be found necessary to use the air heated above 90 as too rapid drying, and not allowing the size to set injures the quality of the paper.

The paper in a continuous sheet, as it comes from the sizing vat, is carried by machinery onto conductors or aprons made of tape, felt, or cloth passing over rollers, and is conveyed on them lengthwise along and near the surfaces of the upper trunk, and is thus partially dried. By the onward movement of the paper upon the aprons or conductors, it is carried back in an opposite direction between the perforated surfaces of the upper trunk, and the next one below it, and is thus made to pass between all of them, the current of heated air passing through the trunks, and being forced through the holes upon the paper during its passage through the machine until it reaches the lower trunk, when the process of drying will be found complete. While the paper is passing from the top to the bottom of the machine, the blast is gradually increasing in volume, it being very light at first to allow the size to set. It

has been found in practice that the size on the paper if dried too rapidly will crack the sizing vat to the drying machine, dispensin with the use of reels.

Having thus fully described our invention what we claim therein as new and desire to secure by Letters Patent is- The process of drying sized paper by passing it bet-ween a series of trunks perforated on two sides, and so arranged that the hot air passing through these perforations will come in contact with both sides of the paper and then escape, and not run or be confined with the sheets.

JOSEPH KINGSLAND, J12. NORMAN WHITE. Witnesses as to Joseph Kingsland, Jr.:

WILLIAM P. BURHANS, CYRUS BURHANS.

Witnesses as to Norman White:

JNo. S. NIoHoLLs, CHAS. F. WHITE. 

